Auxiliary retainer for removable core



AUXILIARY RETAINER FOR REMOVABLE CORE Filed NOV. 16, 1964 2 Sheets-Sheetl INVENTORS 17250 J. RUSSEL 65 265 ,B. SOLOV/EF'F' ATTORNEYS Nov. 22,1966 F. J. RUSSELL ETAL 3,286,773

AUXILIARY RETAINER FOR REMOVABLE CORE 2 Sheets-Sheet 2 Filed Nov. 16,1964 INVENTOR F250 .7. RUSSELL GEORGE B, 5OLO\//EFF" 5 M z m 4 u 4 3 4 W8 I W 15 w W H 1 w 16 S w U G United States Patent 3,286,773 AUXELHARYRETAENER FOR REMGVAELE CGRE Fred J. Russell, 8635 Utis St, South Gate,Caliii, and George B. Soiovieff, San Clemente, Calif.; said Soloviefiassignor to said Russell Fiied Nov. 116, 1964, Ser. No. 411,389 4Claims. ((Il. 7(9-371) This is a continuation-in-part of applicationSerial No. 283,388, filed May 27, 1963 now Patent No. 3,190,091. Theinvention lies in the general field of door locks, but more particularlythat portion of a door lock which provides means for accommodating aremovable keyoperated mechanism, frequently termed a core, in properposition for manipulating an appropriate lock device. In door lockswhich make use of a key-operated mechanism, located within the lockhousing, there is considerable advantage in being able to remove thekeyoperated mechanism which fits one particular key and in being able toreplace it with another key-operated mechanism which requires adifferent key. The common term for this is re-keying. Being able tore-key a lock satisfies a variety of purposes. If all keys have beenlost, a new key-operated mechanism may be needed. If keys have falieninto the hands of unauthorized persons, then rekeying is desirable. Instill other cases, it may become desirable to have a lock keyeddifferently so that there is no common 'key with access to allpassageways fitted with a look. In other cases, it may be needful tohave all locks, regardless of location, capable of being opened by thesame key. These instances are cited merely to suggest that there is anever present need for looks wherein the key-operated mechanism can beremoved and replaced at will.

In some instances in the past, the housing itself has served as a meansfor providing an engagement with a removable key-operated mechanism tohold it in place. On other occasions, as for example, in applicantspatent cited above, the spindle has been modified so as to be engaged bythe. removable key-operated mechanisn. Although the means heretoforeresorted to have certain special advantages, they likewise havelimitations.

It is therefore among the objects of the invention to provide a new andimproved auxiliary container for a removable core which is, in fact, aseparate piece adapted to be separately formed and subsequentlyassembled with portions of the lock housing, so as to thereafter form aunitary assembly.

Another object of the invention is to provide a new and improvedauxiliary retainer assembly in a lock device for accommodation of theremovable key-operated mechanism, wherein the retainer, althoughseparately formed, becomes an integral part of the assembly once it isanchored in position.

Still another object of the invention is to provide an auxiliaryretainer for a lock adapted to accommodate a removable key-operatedmechanism wherein low friction material is employed for the auxiliaryretainer, thereby to take full advantage of outstanding characteristicsof low friction material as, for example, quiet operation, low cost,ease of construction and assembly, and the assurance of continuedefficient operation, while at the same time, making use of conventionalmetallic material for other portions of the assembly.

Still another object of the invention is to provide a new improvedauxiliary retainer of low friction material in a housing assembly whichis adapted to accommodate a removable key-operated mechanism, thereby totake advantage of the ease with which machining can be done upon a lowfriction nonmetallic material for specially shaped cut out portions andforming operations, without in any way sacrificing the needed ruggednessof construction, while at the same time making an especiallysatisfactory housing assembly at a modest price.

With these and other objects in view, the invention consists in theconstruction, arrangement, and combination of the various parts of thedevice, whereby the objects contemplated are attained, as hereinafterset forth, pointed out in the appended claims, and illustrated in theaccompanying drawings.

In the drawings:

FIGURE 1 is a perspective exploded view of the various parts of thehousing assembly.

FIGURE 2 is a side view partially broken away of the parts when inassembled form and with a key-operated mechanism in position.

FIGURE 3 is a fragmentary cross-sectional view taken on the line 3-3 ofFIGURE 2.

FIGURE 4 is a fragmentary cross-sectional view taken on the line 4- i ofFIGURE 2.

FEGURE 5 is a longitudinal sectional view of a second form of the devicewherein the housing consists of a door knob.

FIGURE 6 is a cross-sectional view taken on the line 65 of FIGURE 5.

FIGURE 7 is a front view taken on the line 7-7 of FIGURE 5'.

FiGURE 8 is a fragmentary longitudinal sectional view taken on the line8--8 of FIGURE 5.

In an embodiment of the invention, which is herein described forillustrative purposes, there is shown parts of a housing assemblycustomarily identified as a deadlock trim and consisting in part of ahousing 18 and mounting plate 17. attached to the housing 18 within anannular recess 12, thereby to form a closed chamber 13.

A key-operated mechanism is indicated generally by the referencecharacter 15, this being a commercially available key-operated mechanismfrequently termed a core. The key-operated mechanism selected for thepresent illustration has the form of a figure 8 in cross-section. Aportion it of the key-operated mechanism 15 contains a rotating key plug17, in which is a keyway 18. The key plug 17 is adapted to employ twodifferent keys (not shown), one key being used to extend and retract acam or gate 1% and the other being an operators key. When the operatorskey is manipulated, it rotates the key plug 17 to which is attached atailpiece Ztl in turn engageable with a driver 21 and a lock tailpiece22, whereby to ianipulate a latch bolt mechanism (not shown).

An auxiliary retainer, indicated generally by the reference character25, is adapted when assembled to form part of the housing assembly asshown in FIGURE 2. The auxiliary retainer 25 is specially shaped to makethis possible. As shown to good advantage in FIGURE 1, the auxiliaryretainer 25 is provided at its outer end with an arcuate shoulder 2-6and anadjacent arcuate flange 27. The arcuate shoulder 26 engages aninner face 28 of a face plate 29, and the arcuate flange 27 fits withinan arcuate wall 3% of one section 31 of a figure 8 opening through theface plate 29. The section 31, together with another similar section 32,accommodates the key-operated mechanism 15.

At the inner end of the auxiliary retainer 25 is a projection 33 smailerin diameter than the diameter of a body 34 of the auxiliary retainer 25whereby to form an inwardly facing annular shoulder 36. In the mountingplate 11 there is provided an opening 37 adapted to snugly receive theprojection 33. A radial extension 38 of the opening 37 providescircumferentially facing retainins areas 39 and 44 which are adapted toreceive a radially extending lug 41 on the body 34 of the auxiliaryretainer 25. Engagement of the lug 4]. with the retaining areas 39 and40 prevent the auxiliary retainer from rotating, once in position.

A slot 42 extends from the outermost portion of the body 34 axiallyinwardly to a cut out area 43 adjacent the lug 41. The cut out portion43, joining the slot 42 forms an inwardly facing shoulder 44.

When the auxiliary retainer 25 is mounted in the position shown inFIGURE 2, it is snugly held between the face plate 29 and the mountingplate 11, wherein the inner face 28 of the face plate 29 presses againstthe arcuate shoulder 26 of the auxiliary retainer 25; and the mountingplate 11 at its inside face 45 presses against the annular shoulder 36,thereby firmly holding the auxiliary retainer 25 in position. Aspreviously described, the lug 41 retained as it is in the radialextension 38 of the opening 37 prevents the auxiliary retainer 25 fromrotating under any circumstances.

Within the auxiliary retainer 25 is a bore 46 which is adapted toreceive the portion 16 of the key-operated mechanism 15. Thekey-operated mechanism 15 is of such size that it freely enters thesections 31 and 32 of the figure 8 opening in the face plate 29,whereafter the portion 16 of the key-operated mechanism 15 slides freelyinto the bore 46 while the junction between portions 16 and theremainder of the key-operated machanism 15 passes into the slot 42.While this is taking place, the gate 19 will have been withdrawn intothe body of the key-operated mechanism 15 by manipulation of the removalkey, previously made reference to, which has been inserted into thekeyway 18.

Once in position, an extension 47 of the key-operated mechanism 15 fitswithin an appropriate recess 48 in the outer end of the auxiliaryretainer 25. Also, once in the position shown in FIGURE 2, the gate 19is then extended by the removal key so that an outer end 49 of the gate19 falls behind the inwardly facing shoulder 44 of the body 34 wherebyto interlock the key-operated mechanism 15 with the auxiliary retainer25 so that it cannot be removed except by manipulation of the removalkey. Such manipulation is possible, however, by use of the removal keywhereby the gate 19 can be retracted thereby to disengage the outer end49 from the inwardly facing shoulder 44, after which the key-operatedmechanism 15 can be extracted outwardly through the figure 8 opening inface plate 29. This operation may carry with it the tailpiece 20 whichcan slide free of the driver 21.

It has been found specially advantageous to construct the auxiliaryretainer 25 of some one or another commercially available syntheticplastic resin material having adequate strength and low friction surfacecharacteristics such, for example, as nylon or Delrin. It will beunderstood, however, that the essence of the disclosure lies in makingthe auxiliary retainer 25 a separate piece so that it can be separatelyconstructed and thereafter assembled advantageously within the housingand the mounting plate 11 to form a housing for the key-operatedmechanism 15.

In a second form of the device illustrated in FIGURES 5, 6, 7, and 8,the housing 10 is replaced with a somewhat conventional door knob 55.The door knob 55 has a face plate 56 in which is a substantially figure8- shaped opening having sections 57 and 58 which will accommodate akey-operated mechanism in the same manner as heretofore described. Atthe inner end of the door knob 55 is a shank 59, a reduced portion 60 ofwhich is rotatably mounted in a bearing 61 of a substantiallyconventional rose 62.

A mounting plate 63 overlies the inside face of an inner end wall 64 ofthe door knob 55. Arcuate projections 65 and 66 forming part of theshank 59 extend through appropriate arcuate appertures 67 and 68 in themounting plate 63 where expanded portions 69 anchor themounting plate 63to the shank 59. Circumferentially facing retaining areas 70 and 71provide a space therebetween for reception of a lug 41' on the auxiliaryretainer 25.

If desired, a second lug 41", diametrically opposite from the lug 41,may be retained between circumferentially facing areas 72 and 73. Onsome occasions, as for example in making use of the auxiliary retainer25 in the form of devices of FIGURES 5, 6, 7, and 8, the inner end ofthe auxiliary retainer 25 may be provided with a tapered portion 74 sothat it can be more readily forced through an opening 75 in the mountingplate 63. Arcuate beads 76, 76 may be employed, projecting to a slightlylarger diameter than the diameter of the opening 75, so as to anchorbehind the mounting plate 63, thereby to assist in holding the auxiliaryretainer 25 in position.

In this form of housing assembly, the key-operated mechanism 15 operatesin substantially the same fashion in making use of its gate 19 to holdthe key-operated mechanism 15 in position in the auxiliary retainer 25.When in position, the key-operated mechanism 15 operates through aspindle 77 to manipulate a substantially conventional latch boltmechanism (not shown).

It is significant to note that the entire interior of the body 34 of theauxiliary retainer 25 can be made perfectly smooth and with relativelylow friction characteristics, whether made of metal or low frictionmaterial, but that the low friction characteristic is substantiallygreater when the low friction material is employed. All interiorportions of the auxiliary retainer 25 which accommodate the key-operatedmechanism 15 have the same characteristics. Moreover, in both forms ofthe invention, the relative distances between the shoulders 26 and 36 ofthe auxiliary retainer 25 can be held to the most effective dimensionwhereby to provide a snug fit between opposite portions of the lockhousing which press against them. In the housing assembly described,substantially the entire interior consists of the auxiliary retainer 25which, being a separate piece and separately formed, can be cut andshaped independently and thereafter assembled with ease in the otherportions of the device.

While the invention has herein been shown and described in what isconceived to be the most practical and preferred embodiment, it isrecognized that departures may be made therefrom within the scope of theinvention, which is not to be limited to the details disclosed hereinbut is to be accorded the full scope of the claims so as to embrace anyand all equivalent devices.

Having described the invention, what is claimed as new in support ofLetters Patent is:

1. In a lock device, a housing comprising a mounting plate at the innerend having an opening therein and a face plate at the outer end having ahole therein, and a key-operated mechanism having a projecting cam meansthereon responsive to operation by a removal key and not responsive tooperation by an operator key, the combination of an auxiliary retainercomprising a sleeve in endwise engagement with said face plate, aportion of the sleeve having a position in said hole, the inner end ofthe sleeve being in engagement with the mounting plate, and a projectionon said inner end having a position in said opening, a shoulder on saidportion in endwise engagement with said mounting plate, and meansholding said sleeve in nonrotating engagement with one of said platesconsisting of rotationally facing shoulders on said one of said platesand said sleeve, whereby said sleeve is anchored nonrotatably inposition between said face plate and said mounting plate, said sleevehaving a slot for reception of a portion of the key-operated mechanism,and a shoulder adjacent the slot engageable with said cam means wherebyto retain said key-operated mechanism in said auxiliary retainer.

2. In a lock device, a housing comprising a mounting plate at the innerend having an opening therein and a face plate at the outer end having ahole therein, and a key-operated mechanism having projecting cam meansthereon responsive to operation by a removal key and not responsive tooperation by an operator key, the combination of an auxiliary retainercomprising a sleeve of syrb thetic plastic resin material in endwiseengagement with said face plate, a portion of the sleeve being inalignment with said hole, the inner end of said sleeve being in endwiseengagement with the mounting plate and a projection on said inner endhaving a position in said opening, a shoulder on said portion in endwiseengagement with said mounting plate, and means holding said sleeve innonrotating engagement with one of said plates consisting ofrotationally facing shoulders on said one of said plates and saidsleeve, whereby said sleeve is anchored nonrotatably in position betweensaid face plate and said mounting plate, said sleeve having a slot forreception of a portion of the key-operated mechanism and a shoulderadjacent the slot engageable with said cam means whereby to re tain saidkey-operated mechanism in said auxiliary retainer.

3. In a lock device, a housing comprising a mounting plate at the innerend having an opening therein, a face plate at the outer end having ahole therein and a keyoperated mechanism having projecting cam meansthereon responsive to operation by a removal key and not responsive tooperation by an operator key, the combination of an auxiliary retainercomprising a sleeve having a shoulder at the outer end engageable withthe inside of said face plate, a portion of said sleeve being inalignment with said hole, the inner end of said sleeve having a positionin said opening, a rearwardly facing shoulder on said sleeve inengagement with the mounting plate adjacent said opening,circumferentially facing retaining means on said mounting plate and aradially extending lug on the sleeve in nonrotating engagement with saidretaining means, whereby said sleeve is anchored nonrotatably inposition between said face plate and said mounting plate, said sleevehaving a slot extending inwardly from the outer end for reception of aportion of the keyoperated mechanism, and an inwardly facing shoulder atthe side of the slot engageable with said cam means whereby to retainsaid key-operated mechanism in said auxiliary retainer.

4. In a lock device, a housing comprising a mounting plate at the innerend having an opening therein, a face plate at the outer end having anarcuate hole therein, and a key-operated mechanism having a projectingcam means thereon responsive to operation by a removal key and notresponsive to operation by an operator key, the combination of anauxiliary retainer comprising a sleeve of synthetic plastic resinmaterial having an arcuate shoulder at the outer end engageable with theinside of said face plate and an arcuate flange on the sleeve adjacentthe shoulder having a position in said hole, a projection on the innerend of said sleeve having a position in said opening, and a rearwardlyfacing shoulder at the junction of said projection and said sleeve inengagement with the mounting plate adjacent said opening,circumferentially facing retaining means on said mounting plate and aradially extending lug on the sleeve in nonrotating engagement with saidretaining means, whereby said sleeve in anchored nonrotatably inposition between said face plate and said mounting plate, said sleevehaving a slot extending inwardly from the outer end for reception of thekey-operated mechanism and aninwardly facing shoulder at the side of theslot engageable with said cam means whereby to retain said key-operatedmechanism in said auxiliary retainer..

References Cited by the Examiner UNITED STATES PATENTS 721,802 3/ 1903Home 370 2,079,583 5/1937 Brauning 70224 2,484,961 10/ 1949 Russell etal 70379 X 2,838,926 6/1958 Schmid 70216 3,019,633 2/1962 Russell et a1.70224 3,206,958 9/1965 Best 70369 X EDWARD C. ALLEN, Primary Examiner.

P. TEITELBAUM, Assistant Examiner.

1. IN A LOCK DEVICE, A HOUSING COMPRISING A MOUNTING PLATE AT THE INNEREND HAVING AN OPENING THEREIN AND A FACE PLATE AT THE OUTER END HAVING AHOLE THEREIN, AND A KEY-OPERATED MECHANISM HAVING A PROJECTING CAM MEANSTHEREON RESPONSIVE TO OPERATION BY A REMOVAL KEY AND NOT RESPONSIVE TOOPERATION BY AN OPERATOR KEY, THE COMBINATION OF AN AUXILIARY RETAINERCOMPRISING A SLEEVE IN ENDWISE ENGAGEMENT WITH SAID FACE PLATE, APORTION OF THE SLEEVE HAVING A POSITION IN SAID HOLE, THE INNER END OFTHE SLEEVE BEING IN ENGAGEMENT WITH THE MOUNTING PLATE, AND A PROJECTIONON SAID INNER END HAVING A POSITION IN SAID OPENING, A SHOULDER ON SAIDPORTION IN ENDWISE ENGAGEMENT WITH SAID MOUNTING PLATE, AND MEANSHOLDING SAID SLEEVE IN NONROTATING ENGAGEMENT WITH ONE OF SAID PLATESCONSISTING OF ROTATIONALLY FACING SHOULDERS ON SAID ONE OF SAID PLATESAND SAID SLEEVE, WHEREBY SAID SLEEVE IS ANCHORED NONROTATABLY INPOSITION BETWEEN SAID FACE PLATE AND SAID MOUNTING PLATE, SAID SLEEVEHAVING A SLOG FOR RECEPTION OF A PORTION OF THE KEY-OPERATED MECHANISM,AND A SHOULDER ADJACENT THE SLOT ENGAGEABLE WITH SAID CAM MEANS WHEREBYTO RETAIN SAID KEY-OPERATED MECHANISM IN SAID AUXILIARY RETAINER.